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Dilatometric research on pearlite-to-austenite transformation of Fe–1C–1.44Cr low-alloy steel

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Abstract

The pearlite-to-austenite transformation during isothermal and uniform heating processes of classic bearing steels was studied using a dilatometer. The relationship between ferrite, cementite, and austenite during the transformation was investigated in detail. To explain the experimental phenomenon more theoretically, pearlite-to-austenite transformation was simulated using the DICTRA module of the Thermo-Calc software package based on a simplified model. Experimental results validated the pearlite-to-austenite transformation mechanism of low-alloy steel previously proposed. The transformation is controlled by Cr diffusion and C diffusion below and above the partition-to-no-partition temperature, respectively.

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Notes

  1. UHP EAF (EBT) + LF + VD: Ultra-high power electric furnace smelting (eccentric bottom tapping) + refined-smelting ladle furnace + vacuum degassing.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 51276015).

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Authors and Affiliations

  1. School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Zhiqiang Li, Zhi Wen, Fuyong Su & Zhongtan Zhou

  2. Beijing Key Laboratory of Energy Saving and Emission Reduction for Metallurgical Industry, University of Science and Technology Beijing, Beijing, 100083, China

    Zhi Wen & Fuyong Su

  3. Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, China

    Ruijie Zhang

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  1. Zhiqiang Li
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Correspondence to Fuyong Su.

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Li, Z., Wen, Z., Su, F. et al. Dilatometric research on pearlite-to-austenite transformation of Fe–1C–1.44Cr low-alloy steel. J Mater Sci 53, 1424–1436 (2018). https://doi.org/10.1007/s10853-017-1556-x

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